Grating



Feb. 26, 1924. 1,484,93

W. L. PATTISON GRATING Filed May 23, 1923 N VEN TOR.

' fi m ATTORNEY.

Patented Feb. 26, 1924.

WILLIAM L. PATTISON,

OF ROSEDALE, KANSAS.

GRATING.

Application filed May 28,

of my invention is to kind described,

not 'liable to distortion under relatively heavy weights, which in its construction employs for the most part relatively narrow bars arranged to afford a maximum of strength and a minimum of cost for material.

My invention provides novel re-enforcing means by which relatively narrow bars may have a maximum of supporting capacity.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing which illustrates the preferred embodiment of my invention,

Fig. 1 is a perspective view of my'improved grating.

Fig. 2 is a top view of the same.

Fig. 3 is an under view of an end portion of the grating shown in Fig. 2.

Fig. 4 is a vertical cross sectional view of a grating and portions of one adjacent thereto embodying my improvement, shown. mounted a supporting beam.

Fig.5 is-a sectional view on the line 5-5 of Fig. 4. i

Fig. 6 is a cross bars.

Similar reference characters designate similar parts in the different views.

My improved grating comprises two lonitudinal side bars 1, dlsposed edge up, each ar having at each end and lower edge a notch 2 adapted to receive a horizontal supporting beam 3 upon which rests the upper edge of the adjacent notch 2.

Between the side bars 1 are intermediate bars, disposed edge up,-comprising longitudinal-straight parallel bars 4. alternating with and respectively secured to bent bars 5 each having oblique portions 6 and cross portions 7, the outer bars 5 being respectively secured to the inner sides of the side bars 1.

Two cross bars 8, disposed edge up, and,

perspective view of one of the 1923. Serial No. 641,804.

having bent end portions respectively secured to the inner sides of the bars 1, are respectively disposed directly below and have their upper edges contacting with the bars l and-with the adjacent cross portions 7 of the bars 5. The lower edges of the cross bars 8 are flush with the upper edges of the adjacent notches 2 and are adapted to rest on' the upper sides respecpreferably,

=tively of adjacent supportmg beams corresponding to the beam 3 and which are disposed in the notches 2.

If desired each grating may be provided with a cross bar 9 having oppositely turned ends respectively secured to the inner sides of the side bars 1, the bar 9 being disposed edge up between the bars 8 with its upper edge supporting the lower edges of the bars 5 and 4.

As shown in Fig. 5, the beam 3 may support two rows of gratings disposed respectively at'opposite sides of the beam. The notched portlons of the bars 1 hold the gratings from lon 'tudinal movement.

. By having firs 1 of relatively consider-- able verticalwidth, the bars 4 and 5 and the cross bars 8 may be relatively narrow in vertical width, thus afiording' relatively small cost for material. By disposing the cross bars 8 directly below the end cross portions 7 of the bars 5 and in alinement with the adjacent notches 2 and flush with the upper edges of said notches, the cross bars 8-may rest on the beam 3, thereby afiording a very strong structure capable of supporting without distortion relatively heavy weights.

I do notlimit my invention to the structure shown and described, as many modifica-. tions, within the scope of the appended claims may be made without departing from the spiritof my invention.

What I claim is 1. A grating of the kind described comprising two side bars disposed edge up each having at one end and lower edge a notch adapted to receive a supporting beam, intermediate longitudinal bars disposed edge up and attached to each other and to the side bars, and a cross bar attached at its ends to the side bars respectively and having its lower edge flush with the upper edges of said notches and having its upper edge contacting with and adapted to support said intermediate bars, substantially as set forth.

2. A grating of the kind described comatbne end and lower edg a notch I tache'd at its ends to the side barsrespective- 1; and having its lower edge flush with the upper edges of said notches and having its upper edge contacting with and adapted to support said cross portions and the intermediate bars between said cross portions, substantially asset forth. I

- 3. A grating of the kind described comprising two side bars-disposed edge up, intermediate longitudinal bars disposed edge up and attached to each other and to said side bars and'of less vertical width than the side bars, and a cross bar havingits ends respectively attached to said sidebars and contacting with the lower edges of and adapted to support said intermediate bars, substantially as set forth.

4. A grating comprising two side bars disposed edge up, each having at one end and lower edge a notch, intermediate bars disposed edge up side by sideand attached to each other, the outer ones of the intermediate bars being respectively attached to the side bars, and a cross bar in alinement with said'notches and edge up-wi'tl'fits lower edge flush with the upperedges of saidedge of said crossbar bearsfsubstantially as set forth.

5. A grating comprising two side bars disposed edge up, each having'at one end and lower edge a notch, intermediate bars disposed edge .up side by side and attached to each other, the outer ones of the intermediate bars being respectively attached to the side bars, alternate ones of said intermediate bars havirig cross -portions, and a cross bar in alinement with said notches and disposed edge up with its lower edge flush with the upper edges of said notches, and its upper edge contacting with the lower edges of said cross portions and with the bars between said cross portions, and a supporting beam disposed in said notches and upon which the upper" edges of said notches and the lower edge of said cross bar bears, substantially as set forth. i

In testimony whereof I have signed my name to this specification,

.WILLIAM L. rA'r'risoN. 

